Dr. Edward F. Zalewski Profile

Dr. Edward F. Zalewski

Research Professor at Wyant College of Optical Sciences

SPIE Involvement:

Author | Instructor

Proceedings Article | 22 August 2005 Paper

Solar radiation based calibration of a short-wave ir radiometer and a comparison of exoatmospheric solar spectral irradiance data sets

Edward Zalewski, Christopher Cattrall

Proceedings Volume 5882, 588204 (2005) https://doi.org/10.1117/12.619699

KEYWORDS: Calibration, Radiometry, Short wave infrared radiation, Lamps, Sun, Bidirectional reflectance transmission function, Aerosols, Remote sensing, Atmospheric particles, Spectral calibration

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Proceedings Article | 7 January 2004 Paper

Optical correction for multiple back reflections in an automated spectroradiometric measurement system

William Garland, Stuart Biggar, Edward Zalewski, Kurtis Thome

Proceedings Volume 5159, (2004) https://doi.org/10.1117/12.505082

KEYWORDS: Transmittance, Spectral resolution, Optical filters, Calibration, Interference filters, Radiometry, Sensors, Absorption filters, Monochromators, Lamps

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Proceedings Article | 8 April 2003 Paper

Traceable radiometry underpinning terrestrial- and helio-studies (TRUTHS)

Nigel Fox, James Aiken, John Barnett, Xavier Briottet, Ray Carvell, Claus Froehlich, Steven Groom, Olivier Hagolle, Joanna Haigh, Hugh Kieffer, Judith Lean, David Pollock, Terence Quinn, Michael Sandford, Michael Schaepman, Keith Shine, Werner Schmutz, Phil Teillet, Kurtis Thome, Michel Verstraete, Edward Zalewski

Proceedings Volume 4881, (2003) https://doi.org/10.1117/12.462438

KEYWORDS: Calibration, Sensors, Radiometry, Satellites, Solar radiation, Climatology, Solar radiation models, Earth's atmosphere, Sun, Particle filters

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Proceedings Article | 8 April 2003 Paper

The reflectance-based calibration of SeaWiFS

Robert Barnes, Edward Zalewski

Proceedings Volume 4881, (2003) https://doi.org/10.1117/12.462495

KEYWORDS: Diffusers, Calibration, Reflectivity, Bidirectional reflectance transmission function, Sun, Sensors, Radiometry, Telescopes, Distance measurement, Optical testing

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Proceedings Article | 15 November 2000 Paper

Radiance stabilization of a calibration sphere source using two spectral bands

Xiancheng Ding, Edward Zalewski, Stuart Biggar

Proceedings Volume 4135, (2000) https://doi.org/10.1117/12.494222

KEYWORDS: Sensors, Lamps, Detection and tracking algorithms, Optical spheres, Feedback control, Power supplies, Calibration, Control systems, Analog electronics, Radiometry

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Proceedings Article | 15 November 2000 Paper

Ground-reference techniques for the absolute radiometric calibration of MODIS

Kurtis Thome, Emily Whittington, Noel Smith, Prabal Nandy, Edward Zalewski

Proceedings Volume 4135, (2000) https://doi.org/10.1117/12.494219

KEYWORDS: Sensors, Calibration, MODIS, Reflectivity, Satellites, Sensor calibration, Radiometry, Landsat, Aerosols, Earth observing sensors

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Proceedings Article | 28 December 1999 Paper

Radiometric measurement comparisons using transfer radiometers in support of the calibration of NASA's Earth Observing System (EOS) sensors

James Butler, B. Carol Johnson, Steven Brown, Howard Yoon, Robert Barnes, Brian Markham, Stuart Biggar, Edward Zalewski, Paul Spyak, John Cooper, Fumihiro Sakuma

Proceedings Volume 3870, (1999) https://doi.org/10.1117/12.373186

KEYWORDS: Radiometry, Optical spheres, Calibration, Integrating spheres, Short wave infrared radiation, Sensors, Satellites, Infrared radiation, Lamps, Remote sensing

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EOS satellite instruments operating in the visible through the shortwave infrared wavelength regions (from 0.4 micrometer to 2.5 micrometer) are calibrated prior to flight for radiance response using integrating spheres at a number of instrument builder facilities. The traceability of the radiance produced by these spheres with respect to international standards is the responsibility of the instrument builder, and different calibration techniques are employed by those builders. The National Aeronautics and Space Administration's (NASA's) Earth Observing System (EOS) Project Science Office, realizing the importance of preflight calibration and cross-calibration, has sponsored a number of radiometric measurement comparisons, the main purpose of which is to validate the radiometric scale assigned to the integrating spheres by the instrument builders. This paper describes the radiometric measurement comparisons, the use of stable transfer radiometers to perform the measurements, and the measurement approaches and protocols used to validate integrating sphere radiances. Stable transfer radiometers from the National Institute of Standards and Technology, the University of Arizona Optical Sciences Center Remote Sensing Group, NASA's Goddard Space Flight Center, and the National Research Laboratory of Metrology in Japan, have participated in these comparisons. The approaches used in the comparisons include the measurement of multiple integrating sphere lamp levels, repeat measurements of select lamp levels, the use of the stable radiometers as external sphere monitors, and the rapid reporting of measurement results. Results from several comparisons are presented. The absolute radiometric calibration standard uncertainties required by the EOS satellite instruments are typically in the plus or minus 3% to plus or minus 5% range. Preliminary results reported during eleven radiometric measurement comparisons held between February 1995 and May 1998 have shown the radiance of integrating spheres agreed to within plus or minus 2.5% from the average at blue wavelengths and to within plus or minus 1.7% from the average at red and near infrared wavelengths. This level of agreement lends confidence in the use of the transfer radiometers in validating the radiance scales assigned by EOS instrument calibration facilities to their integrating sphere sources.

Proceedings Article | 28 December 1999 Paper

Solar-radiation-based calibration in the range 740 to 2400 nm

Stuart Biggar, Kurtis Thome, Paul Spyak, Edward Zalewski

Proceedings Volume 3870, (1999) https://doi.org/10.1117/12.373190

KEYWORDS: Calibration, Radiometry, Diffusers, Sensors, Transmittance, Short wave infrared radiation, Lamps, Bidirectional reflectance transmission function, Sun, Aerosols

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Proceedings Article | 27 October 1999 Paper

MTI on-orbit calibration

William Clodius, Steven Bender, R. Rex Kay, Barham Smith, William Atkins, R. Wynn Christensen, Cynthia Little, Edward Zalewski, William Rappoport

Proceedings Volume 3753, (1999) https://doi.org/10.1117/12.366300

KEYWORDS: Calibration, Sensors, Imaging systems, Black bodies, Thermography, Infrared imaging, Infrared radiation, Electronics, Lamps, Radio optics

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Proceedings Article | 23 September 1993 Paper

HYDICE: an airborne system for hyperspectral imaging

Lee Rickard, Robert Basedow, Edward Zalewski, Peter Silverglate, Mark Landers

Proceedings Volume 1937, (1993) https://doi.org/10.1117/12.157055

KEYWORDS: Signal to noise ratio, Imaging systems, Spectroscopy, Hyperspectral imaging, Spatial resolution, Sensors, Calibration, Analytical research, Staring arrays, Remote sensing

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Proceedings Article | 11 January 1993 Paper

Proton-induced radiation effects on optical glasses

Peter Silverglate, Edward Zalewski, Peter Petrone

Proceedings Volume 1761, (1993) https://doi.org/10.1117/12.138944

KEYWORDS: Absorption, Glasses, Prisms, X-rays, Holmium, Oxides, Silica, Cements, Refraction, Color centers

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Showing 5 of 11 publications

SPIE Conference Volume | 15 November 1979

Measurements of Optical Radiations

Conference Committee Involvement (1)

Measurements of Optical Radiations

27 August 1979 | San Diego, United States

Course Instructor

SC572: Radiometric Calibration of Remote Sensors

A remote-sensing radiometer looks at a target of interest and generates a numeric output signal, often a digital number, voltage, or current. What does this number mean? Calibration is the process of relating this number to a radiometric quantity such as watts. This course reviews radiometric terminology and concepts and uses them to illustrate methods for calibrating passive and active remote sensors. The approach throughout the course is to express the measurement as a measurement equation with uncertainties that drive the calibration methods and requirements. Examples are shown with ground-based, airborne, and space-based sensor systems. The topics include calibration philosophy, radiometry review, calibration standards and traceability, atmospheric effects, uncertainty analysis, calibration methods for thermal infrared sensors, calibration methods for uv, visible, and near-infrared sensors, field of view and angular response, spectral response, polarization response, and imaging systems calibration.

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